The Beaumont–Adams revolver was a muzzle-loading double-action percussion revolver. Originally adopted by the British Army in .442 calibre (54-bore 11.2mm) in 1856 many were later converted to use centrefire cartridges. It was replaced in British service in 1880 by the .476 calibre (actually 11.6mm) Enfield Mk I revolver.
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